We have always had a soft spot for great leather jackets, especially Johan Lindeberg's expertly crafted BLK DNM numbers. The designer is kicking things up a notch with his new BLK DNM Leather Project X App, which launched today. It allows you to customize your leather jacket right from your iPhone.

"There's something really special to having a custom-made leather jacket," Lindeberg said. "People tend to collect certain pieces in their wardrobe that just stick with them over the years, and the pieces come to really represent who they are. I think for many, like me, a leather jacket is one of those core pieces." (Lindeberg is hardly ever seen without one on.)

Similar to the in-store service offered at the brand's New York and Stockholm locations, you can pick from three basic cuts—the classic, cropped women's motorcycle jacket (Leather Jacket 1), the men's leather style (Leather Jacket 5), and the masculine fit women's motorcycle number (Leather Jacket 8). You can also choose from a range of colors and luxe fabrics, such as emerald green, high-gloss sheepskin, and goat-hair shearling in midnight blue. Then, customize various sections of the jacket, including the collar and the sleeves. Once you've designed your dream topper, you get to approve a mock-up version before it goes into final production. Six weeks later, it's at your doorstep.

Create your own jacket now at leatherprojectx.com for $3,495 to $3,995. Need inspiration? Check out this exclusive first look, above, of Lindsey Wixson modeling a customized jacket.